Commit graph

480413 commits

Author SHA1 Message Date
Hante Meuleman
4a1c61508b brcmfmac: (clean) Move tracepoint related function.
__brcmf_err is a tracepoint specific function. Move it to
tracepoint.c.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:26:38 -04:00
Hante Meuleman
d3c80372e0 brcmfmac: (clean) Remove packet filter configuration.
Packet filters got configured but never used.

Reviewed-by: Franky Lin <frankyl@broadcom.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:50 -04:00
Hante Meuleman
ac83d0b0aa brcmfmac: (clean) Remove usb_rdl.h as it is not needed.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:50 -04:00
Arend van Spriel
9c64766680 brcmfmac: do not use firmware error code in driver
Passing the firmware error codes up the driver may be mapped to
linux error numbers which may impact proper fault analysis. So
better pass up a generic failure code, ie. -EBADE and only show
firmware error code in FIL debug message.

Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:50 -04:00
Arend van Spriel
a3e53bbfd9 brcmfmac: remove unused defintion
The define EBRCMF_UNSUPPORTED is not used in the source file so this
patch removes it.

Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:50 -04:00
Arend van Spriel
a9a2808f05 brcmfmac: show firmware error as string in debug message
Showing the firmware error allows to quickly give a clue what
went wrong and directly look in the firmware code that gave us
back the error.

Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:50 -04:00
Hante Meuleman
b9a82f892e brcmfmac: Add wowl patterns support.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:50 -04:00
Hante Meuleman
330b4e4be9 brcmfmac: Add wowl support for SDIO devices.
This patch adds wowl support for SDIO bus devices. This feature
requires FW which has support for wowl built in.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:49 -04:00
Hante Meuleman
244b124c6a brcmfmac: Add wowl support for USB devices.
This patch adds wowl support for USB bus devices. This feature
requires FW which has support for wowl built in.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:49 -04:00
Lorenzo Bianconi
edad187380 ath9k: set pulse_rssi threshold to 15
Reduce pulse_rssi threshold to 15 in order to improve radar pattern detection
probability on ext channel

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:24:49 -04:00
John W. Linville
47cb759ff7 The big new thing here is netdetect which allows the
firmware to wake up the platform when a specific network
 is detected. Along with that I have fixes for d3 operation.
 The usual amount of rate scaling stuff - we now support STBC.
 The other commit that stands out is Johannes's work on
 devcoredump. He basically starts to use the standard
 infrastructure he built.
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Merge tag 'iwlwifi-next-for-john-2014-10-29' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

Emmanuel Grumbach <egrumbach@gmail.com> says:

"The big new thing here is netdetect which allows the
firmware to wake up the platform when a specific network
is detected. Along with that I have fixes for d3 operation.
The usual amount of rate scaling stuff - we now support STBC.
The other commit that stands out is Johannes's work on
devcoredump. He basically starts to use the standard
infrastructure he built."

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-30 15:22:06 -04:00
Eliad Peller
4ff78181f4 iwlwifi: mvm: unref SCAN ref on scan completion
The scan reference wasn't released in case of offloaded scan,
causing the refcount to go wrong and prevent the device
from going into d0i3.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:47 +02:00
Eyal Shapira
d8bafeaf46 iwlwifi: mvm: rs: add Tx STBC support
STBC is enabled on HT/VHT SISO rates in case we don't care
about power consumption and it won't hurt BT.
This is done only in case the peer and our chip support STBC
of course.
While at it fixed a bug which was causing bw and ldpc
flags to be set incorrectly in the rate scale table in case
we are switching to a legacy Tx column. This had no real impact.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:46 +02:00
David Spinadel
1e2ebe0e40 iwlwifi: mvm: fix scan condition iterator
Scan condition iterator assumes that an interface is associated if
phy_ctxt is assigned, but this isn't the sutuation in P2P device.
OTOH P2P device is never associated so we can simply ignore it.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:46 +02:00
Johannes Berg
aadede6e9f iwlwifi: mvm: port to devcoredump framework
iwlwifi features a debug mechanism that allows to dump
binary data which is helpful to debug the firmware.
Until now, this data was made available for the userspace
through debugfs. For this exact purpose, devcoredump was
created. Move to the new infrastructure.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 14:13:43 +02:00
Eyal Shapira
b260362ab7 iwlwifi: enable STBC support for 8000 chips
These chips support STBC in both Tx and Rx.
Given that we've added STBC Tx support enable it.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 13:07:35 +02:00
Joe Perches
50f6635afe iwlwifi: dvm: Fix probable mask then right shift defect
Precedence of & and >> is not the same and is not left to right.
shift has higher precedence and should be done after the mask.

Add parentheses around the mask.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:53:07 +02:00
Luciano Coelho
7ae83d0082 iwlwifi: mvm: remove unnecessary includes in tt.c
We used to need to include some headers in order to read the registers
and do all the calculations by ourselves, but this is not done anymore
(i.e. we let the firmware do this for us), so we don't need to include
those headers anymore.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:53:07 +02:00
Johannes Berg
480acbcee4 iwlwifi: mvm: flush queues without mutex held
For WMM-AC we may have to be changing QoS parameters while the
queues are being flushed. This is not relevant in the "drop"
case, but matters when we wait for the device to finish the
transmissions.

To allow this, do the actual waiting without holding the mutex.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:28 +02:00
Johannes Berg
f85e9d19d4 iwlwifi: mvm: improve MCS rate warning
The warning gives no information about the frame, and presents
the flags so that one might think they're the frame. Clarify
and add more information.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:28 +02:00
Emmanuel Grumbach
ee00aed175 iwlwifi: mvm: BT Coex - make the multiprio lut a constant
This makes it easier to tune the values during the testing.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:27 +02:00
Arik Nemtsov
d92b732e35 iwlwifi: mvm: remove mvm argument from get_queues_mask
It is unused and won't be available in some future invocations of the
function.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:26 +02:00
Max Stepanov
3b8983b17c iwlwifi: mvm: add MVM_FW_BCAST_FILTER_PASS_ALL option
The MVM_FW_BCAST_FILTER_PASS_ALL option defined in iwl-dbg-cfg.ini
configuration file allows to enable/disable FW broadcast filtering.

If MVM_FW_BCAST_FILTER_PASS_ALL is not defined in iwl-dbg-cfg.ini or
its value is 0, the mvm broadcast filtering is enabled.

Setting MVM_FW_BCAST_FILTER_PASS_ALL=1 in iwl-dbg-cfg.ini blocks sending
of BCAST_FILTER_CMD to FW.

Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:26 +02:00
Emmanuel Grumbach
f3b2098d98 iwlwifi: mvm: BT Coex - move BT_ANTENNA_COUPLING_THRESHOLD to constants
This is were it really needs to be.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:25 +02:00
Eran Harary
c7583d7dd6 iwlwifi: always run the secured flow for family 8000
In the new format the "CSS section" has the same TLV type
as the "mem section". So we need to run the secured flow
for all the 8000 products.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:24 +02:00
Emmanuel Grumbach
a3ead6568c iwlwifi: pcie: fix recovery from ARC reset in WoWLAN
When the ARC is reset when we exit from Sx in case we had
WoWLAN running, we can't access the prph before we reset
the NIC.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:23 +02:00
Emmanuel Grumbach
40a76905ad iwlwifi: pcie: warn if extern fw_debug buffer failed
Otherwise we have no way to know that the buffer hasn't been
allocated.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:52:23 +02:00
Gregory Greenman
77d96730db iwlwifi: allow to restrict Tx aggregation size per-device
A few slave bus devices show better performance when we
reduce the size of the Tx A-MPDU.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:13 +02:00
Luciano Coelho
7f549e2c45 iwlwifi: mvm: change the iwl_mvm_d3_iface_iterator into a generic function
Getting the BSS station vif is something that may be needed by other
parts of the code.  So, instead of having an iterator specifically for
d3, change it into a generic one in utils.c.  Additionally, add a
iwl_mvm_get_bss_vif() function to make it easier to retrieving it.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:13 +02:00
Luciano Coelho
3c2f3b20e4 iwlwifi: mvm: add debugfs entry to configure netdetect SSIDs
Before we get all the chain (ie. mac80211, cfg80211, nl80211 and
userspace) changed to support net-detect, we can use this debugfs
entry for easy testing and as a proof of concept.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:13 +02:00
Luciano Coelho
b141c23581 iwlwifi: mvm: spin off a function to start scan offload
The net-detect feature will require a scan offload to be started in
the same way it is done now for scheduled scan.  Spin a new function
off of the sched_scan_start op code for reuse.  Additionally,
restructure the function a bit for more readability.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Luciano Coelho
1e4d19ca6e iwlwifi: mvm: move the check if associated outside of the iterator for wowlan
Instead of checking if we are associated when suspending with wowlan
enabled in the interface iterator, allow it to return an unassociated
vif and move the check to the main suspend function.  This will be
needed by netdetect, since it should also work when we are not
associated but the vif is active.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Luciano Coelho
671b58202e iwlwifi: mvm: split wowlan handling out of the main suspend function
Take the WoWLAN handling code out of the main suspend function,
dividing it into three parts: get_config (which is used before the
firmware is switched), switch_to_d3 (which handles the rebooting of
the hardware with the D3 firmware) and config (which configures the D3
firmware for WoWLAN operation).  This is necessary to prepare for the
net-detect implementation, which will use only the switch_to_d3 part
of this flow.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Luciano Coelho
31ca09dd6b iwlwifi: mvm: hold the rtnl when resuming from a d3 test
We use ieee80211_iter_keys() which requires the rtnl to be held.  If
we don't lock the rtnl, like we do when we suspend during a d3 test,
we get the following splat:

 RTNL: assertion failed at net/mac80211/key.c (566)
 CPU: 1 PID: 26529 Comm: cat Tainted: G        W  O 3.10.29-dev #1
 Hardware name: Dell Inc. Latitude E6430/0CPWYR, BIOS A09 12/13/2012
  e7b15008 e7b15008 e68adc1c c168aa62 e68adc54 f91f20b6 f923700c f9236fd8
  00000236 00000000 ece23874 00000000 f94941e0 00000000 e43b8e48 e7b15008
  00000000 e8b69e78 e68adcc0 f9493ab9 e68adc68 00000000 e43b8e48 e7b15008
 Call Trace:
  [<c168aa62>] dump_stack+0x16/0x18
  [<f91f20b6>] ieee80211_iter_keys+0x166/0x170 [mac80211]
  [<f94941e0>] ? iwl_mvm_query_wakeup_reasons+0x5f0/0x5f0 [iwlmvm]
  [<f9493ab9>] iwl_mvm_setup_connection_keep.isra.5+0x99/0x1d0 [iwlmvm]
  [<f9165e28>] ? cfg80211_report_wowlan_wakeup+0x308/0x510 [cfg80211]
  [<f9493fe5>] iwl_mvm_query_wakeup_reasons+0x3f5/0x5f0 [iwlmvm]
  [<c116125a>] ? init_object+0x3a/0x70
  [<f8a5b8ee>] ? iwl_trans_pcie_d3_resume+0x1be/0x3a0 [iwlwifi]
  [<f94956da>] __iwl_mvm_resume+0x14a/0x180 [iwlmvm]
  [<f9495736>] iwl_mvm_d3_test_release+0x26/0xc0 [iwlmvm]
  [<c117a64d>] __fput+0xad/0x210
  [<c117a7bd>] ____fput+0xd/0x10
  [<c10601a1>] task_work_run+0x81/0xb0
  [<c1040fa5>] do_exit+0x255/0xac0
  [<c104e511>] ? dequeue_signal+0x31/0x1a0
  [<c1041888>] do_group_exit+0x38/0xa0
  [<c10a6cfb>] ? trace_hardirqs_on+0xb/0x10
  [<c1051c31>] get_signal_to_deliver+0x1e1/0x8e0
  [<c104bd52>] ? try_to_del_timer_sync+0x42/0x60
  [<c104bd70>] ? try_to_del_timer_sync+0x60/0x60
  [<c168dc82>] ? schedule_timeout+0x102/0x2a0
  [<c10011ba>] do_signal+0x3a/0x8e0
  [<c104b190>] ? __internal_add_timer+0xb0/0xb0
  [<c168de7a>] ? schedule_timeout_interruptible+0x1a/0x20
  [<c104ce39>] ? msleep_interruptible+0x39/0x40
  [<f94939a9>] ? iwl_mvm_d3_test_read+0x49/0x70 [iwlmvm]
  [<c11797fc>] ? vfs_read+0x8c/0x160
  [<c11243af>] ? SyS_fadvise64_64+0x15f/0x2b0
  [<f9493960>] ? iwl_mvm_wowlan_program_keys+0x4a0/0x4a0 [iwlmvm]
  [<c1179a57>] ? SyS_read+0x57/0xa0
  [<c1001acf>] do_notify_resume+0x6f/0xa0
  [<c1692500>] work_notifysig+0x29/0x31

Fix this by hold the rtnl lock when calling __iwl_mvm_resume() in the
d3 test wake up path.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:12 +02:00
Emmanuel Grumbach
8dfc275109 iwlwifi: mvm: remove unneeded NULL pointer check
mac80211 will never call rate_control_tx_status with a NULL
pointer for sta. Remove the superfluous check. This check
misled smatch.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:11 +02:00
Eyal Shapira
dc574e5263 iwlwifi: rs: option to easily disable Tx MIMO
The current TLC isn't optimized for low latency and some devices
have issues with MIMO. This kind of combo creates latency issues.
Allow to temporarily disable MIMO for tests in order to solve
the latency issues without the added complexity of MIMO.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2014-10-29 12:49:11 +02:00
Emmanuel Grumbach
e7322f3288 Merge remote-tracking branch 'iwlwifi-fixes/master' into iwlwifi-next 2014-10-29 12:48:37 +02:00
Felix Fietkau
5ca06ebe75 ath9k: use a random MAC address if the EEPROM address is invalid
Based on OpenWrt patch by Gabor Juhos

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:19 -04:00
Felix Fietkau
3468968ef7 ath9k: allow disabling bands via platform data
Some devices have multiple bands enables in the EEPROM data, even though
they are only calibrated for one. Allow platform data to disable
unsupported bands.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:19 -04:00
Felix Fietkau
a59dadbeea ath9k: add support for endian swap of eeprom from platform data
On some devices (especially little-endian ones), the flash EEPROM data
has a different endian, which needs to be detected.
Add a flag to the platform data to allow overriding that behavior

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:19 -04:00
Felix Fietkau
7b89fccf15 ath9k_hw: start initial NF calibration after PA calibration on <AR9003
This makes the initial NF calibration less likely to fail.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:18 -04:00
Felix Fietkau
6339244b3b ath9k_hw: do not run NF and periodic calibration at the same time
It can cause inconsistent calibration results or in some cases turn the
radio deaf.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:18 -04:00
Felix Fietkau
7b8aaead95 ath9k: restart hardware after noise floor calibration failure
When NF calibration fails, the radio often becomes deaf. The usual
hardware hang checks do not detect this, so it's better to issue a reset
when that happens.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:18 -04:00
Felix Fietkau
70e535ed00 ath9k: clean up debugfs print of reset causes
Reduce code duplication

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:18 -04:00
Felix Fietkau
3b58014472 ath9k: fix processing RXORN interrupts
The "goto chip_reset" is a bit misleading, because it does not actually
issue a chip reset. Instead it is bypassing processing of other
interrupts and assumes that the tasklet will issue a chip reset.

In the case of RXORN this does not happen, so bypassing processing of
other interrupts will simply allow them to fire again. Even if RXORN
was triggering a reset, it is not critical enough to need the bypass
here.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:18 -04:00
Felix Fietkau
257b5bc680 ath9k_hw: remove support for UB124 tx gain table
UB124 is a USB based reference design not supported by ath9k or
ath9k_htc.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:18 -04:00
Felix Fietkau
935477ed7b ath9k_hw: make support for PC-OEM cards optional
The initvals use up quite a bit of space, and PC-OEM support is
typically not needed on embedded systems

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:18 -04:00
Sujith Manoharan
6424b036e5 ath9k: Update AR955x initvals
* Fix a 11b/EVM issue by adjusting
  FIR filter coefficients.

* Fix a problem with receiving probe request
  frames sent at 11b rate.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:17 -04:00
Sujith Manoharan
d19c230f5f ath9k: Update AR9580 initvals
This fixes RX sensitivity issues with AR9580.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:17 -04:00
Sujith Manoharan
1e929d3e02 ath9k: Do not start BA when scanning
mac80211 currently has a race which can be hit
with this sequence:

* Start a scan operation.
* TX BA is initiated by ieee80211_start_tx_ba_session().
* Driver sets up internal state and calls
  ieee80211_start_tx_ba_cb_irqsafe().
* mac80211 adds a packet to sdata->skb_queue with
  type IEEE80211_SDATA_QUEUE_AGG_START.
* ieee80211_iface_work() doesn't process the
  packet because scan is in progress.
* ADDBA response timer expires and the sta/tid is
  torn down.
* Driver receives BA stop notification and calls
  ieee80211_stop_tx_ba_cb_irqsafe().
* This is also added to the queue by mac80211.
* Now, scan finishes.

At this point, the queued up packets might be processed
if some other operation schedules the sdata work. Since
the tids have been cleaned up already, warnings are hit.

If this doesn't happen, the packets are left in the queue
until the interface is torn down.

Since initiating a BA session when scan is in progress
leads to flaky connections, especially in MCC mode, we
can drop the TX BA request. This improves connectivity
with legacy clients in MCC mode.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-10-27 14:16:17 -04:00